#include <STC89C5xRC.H>
#include "delay.h"
#include "timer0.h"

sbit buzzer=P2^5;

#define speed 125  //16分音符的时长，后面依次乘2

//每个音的索引
#define L1  1
#define L1_ 2
#define L2  3
#define L2_ 4
#define L3  5
#define L4  6
#define L4_ 7
#define L5  8
#define L5_ 9
#define L6  10
#define L6_ 11
#define L7  12
#define M1  13
#define M1_ 14
#define M2  15
#define M2_ 16
#define M3  17
#define M4  18
#define M4_ 19
#define M5  20
#define M5_ 21
#define M6  22
#define M6_ 23
#define M7  24
#define H1  25
#define H1_ 26
#define H2  27
#define H2_ 28
#define H3  29
#define H4  30
#define H4_ 31
#define H5  32
#define H5_ 33
#define H6  34
#define H6_ 35
#define H7  36

unsigned int code FreqTable[]={
	0,
	63628,63731,63835,63928,64021,64103,64185,64260,64331,64400,64463,64528,
	64580,64633,64684,64732,64777,64820,64860,64898,64934,64968,65000,65030,
	65058,65085,65110,65134,65157,65178,65198,65217,65235,65252,65268,65283
};

//第一排是频率索引，第二排是该频率的时长（16分音符为1）
//music1小星星
//music2天空之城
unsigned char music1[]={
13,4,
13,4,
20,4,
20,4,
22,4,
22,4,
20,8,
//0,4,判断会不会休止
18,4,
18,4,
17,4,
17,4,
15,4,
15,4,
13,8,
0xff
};
unsigned int code music2[]={
//1
	0,	4,
	0,	4,
	0,	4,
	M6,	2,
	M7,	2,
	
	H1,	4+2,
	M7,	2,
	H1,	4,
	H3,	4,
	
	M7,	4+4+4,
	M3,	2,
	M3,	2,
	
	//2
	M6,	4+2,
	M5,	2,
	M6, 4,
	H1,	4,
	
	M5,	4+4+4,
	M3,	4,
	
	M4,	4+2,
	M3,	2,
	M4,	4,
	H1,	4,
	
	//3
	M3,	4+4,
	0,	2,
	H1,	2,
	H1,	2,
	H1,	2,
	
	M7,	4+2,
	M4_,2,
	M4_,4,
	M7,	4,
	
	M7,	8,
	0,	4,
	M6,	2,
	M7,	2,
	
	//4
	H1,	4+2,
	M7,	2,
	H1,	4,
	H3,	4,
	
	M7,	4+4+4,
	M3,	2,
	M3,	2,
	
	M6,	4+2,
	M5,	2,
	M6, 4,
	H1,	4,
	
	//5
	M5,	4+4+4,
	M2,	2,
	M3,	2,
	
	M4,	4,
	H1,	2,
	M7,	2+2,
	H1,	2+4,
	
	H2,	2,
	H2,	2,
	H3,	2,
	H1,	2+4+4,
	
	//6
	H1,	2,
	M7,	2,
	M6,	2,
	M6,	2,
	M7,	4,
	M5_,4,
	
	
	M6,	4+4+4,
	H1,	2,
	H2,	2,
	
	H3,	4+2,
	H2,	2,
	H3,	4,
	H5,	4,
	
	//7
	H2,	4+4+4,
	M5,	2,
	M5,	2,
	
	H1,	4+2,
	M7,	2,
	H1,	4,
	H3,	4,
	
	H3,	4+4+4+4,
	
	//8
	M6,	2,
	M7,	2,
	H1,	4,
	M7,	4,
	H2,	2,
	H2,	2,
	
	H1,	4+2,
	M5,	2+4+4,
	
	H4,	4,
	H3,	4,
	H3,	4,
	H1,	4,
	
	//9
	H3,	4+4+4,
	H3,	4,
	
	H6,	4+4,
	H5,	4,
	H5,	4,
	
	H3,	2,
	H2,	2,
	H1,	4+4,
	0,	2,
	H1,	2,
	
	//10
	H2,	4,
	H1,	2,
	H2,	2,
	H2,	4,
	H5,	4,
	
	H3,	4+4+4,
	H3,	4,
	
	H6,	4+4,
	H5,	4+4,
	
	//11
	H3,	2,
	H2,	2,
	H1,	4+4,
	0,	2,
	H1,	2,
	
	H2,	4,
	H1,	2,
	H2,	2+4,
	M7,	4,
	
	M6,	4+4+4,
	0,	4,
	
	0xFF	//终止标志
};

unsigned char freqselect,musicselect;
	
void main()
{
	time0_init();
	while(1)
	{
		if(music2[musicselect]!=0xff)
		{
		freqselect=music2[musicselect];
		musicselect++;
		Delayms(speed *music2[musicselect]);
		musicselect++;
		TR0=0;
		Delayms(5);
		TR0=1;
		}
		else
		{
			TR0=0;
			while(1);
		}
	}

}


//定时器中断函数模板
void timer0_routine() interrupt 1
{
	if(FreqTable[freqselect])
	{
	TL0 = FreqTable[freqselect]%256;		//设置定时初值
	TH0 = FreqTable[freqselect]/256;		//设置定时初值
	buzzer=!buzzer;
	}
	
}
